Provided is a thermoplastic resin film capable of controlling the occurrence of color irregularity after irradiation with light. The thermoplastic resin film according to the present invention contains a thermoplastic resin, a pigment, and a hindered amine light stabilizer.

Provided is an interlayer film for laminated glass capable of preventing generation of a void in the interlayer film in an end part of laminated glass. The interlayer film for laminated glass according to the present invention has a lengthwise direction and a widthwise direction, and includes the following configuration A, the configuration B or the configuration C. Configuration A: containing a light stabilizer, and having such a distribution in content of the light stabilizer in the widthwise direction that the content of the light stabilizer is larger in one end side of the widthwise direction. Configuration B: containing an ultraviolet ray screening agent, and having such a distribution in content of the ultraviolet ray screening agent in the widthwise direction that the content of the ultraviolet ray screening agent is larger in one end side of the widthwise direction. Configuration C: containing an oxidation inhibitor, and having such a distribution in content of the oxidation inhibitor in the widthwise direction that the content of the oxidation inhibitor is larger in one end side of the widthwise direction.

A laminated film for bonding includes: a skin layer comprising a first polyvinyl acetal resin and a first plasticizer; and a core layer comprising a second polyvinyl acetal resin and a second plasticizer, wherein the core layer comprises a metal salt having a refractive index higher than a refractive index of the second plasticizer, wherein a difference between a refractive index of the skin layer and a refractive index of the core layer is 0.0060 or less, and wherein the metal salt is a compound indicated by the following Formula 1:

M.sub.n.Math.X.sub.m  [Formula 1] in the Formula 1, M is magnesium (Mg), calcium (Ca), sodium (Na), or potassium (K), X is Cl, SO.sub.4, or NO.sub.3, and n and m are integers of 1 or 2, respectively.

A thermoplastic film 10 is a thermoplastic film comprising a light-emitting layer 11, wherein the light-emitting layer 11 comprises a thermoplastic resin and a light-emitting material that emits light by being irradiated with excitation light, and a change in yellowness of laminated glass obtained by bonding two sheets of clear glass in accordance with JIS R 3211 (1998) having a thickness of 2.5 mm with the thermoplastic film interposed therebetween after conducting a light resistance test for 2000 hours based on JIS R3205 2005 is 4 or less. The present invention provides a thermoplastic film comprising a light-emitting material, in which the emission intensity is unlikely to lower even when the thermoplastic film is exposed to ultraviolet rays for a long period of time.

Provided is an interlayer film for laminated glass capable of effectively enhancing the sound insulating property of laminated glass having the interlayer film, in the interlayer film including a layer prepared with a thermoplastic component other than a polyvinyl acetal resin. An interlayer film for laminated glass according to the present invention has a one-layer structure or a two or more-layer structure, and includes a thermoplastic elastomer layer containing a thermoplastic elastomer and a plasticizer, and the thermoplastic elastomer is an aliphatic polyolefin, the thermoplastic elastomer layer has a glass transition temperature in a temperature range of −10° C. to 10° C., and a maximum value of tan δ in a temperature range of −10° C. to 10° C. of the thermoplastic elastomer layer is 1.5 or more.

The present invention provides an interlayer film for laminated glass which has excellent sound insulating properties even when the thickness is reduced, and also has a low degree of orientation and low shrinkability. The invention relates to an interlayer film for laminated glass which includes at least one layer A containing a thermoplastic elastomer, wherein the thermoplastic elastomer includes a hard segment block and a soft segment block, the layer A has a sea-island phase separated structure in which the hard segment block is included as an island component and the soft segment block is included as a sea component, and the degree of orientation (1) defined by (maximum intensity value−minimum intensity value)/(maximum intensity value+minimum intensity value) based on the maximum intensity value and the minimum intensity value in an arbitrary azimuth range of 180° including the azimuth at which the intensity reaches the maximum in the azimuthal intensity distribution of periodic scattering or coherent scattering by the hard segment block or the soft segment block obtained for the layer A by small-angle X-ray scattering measurement is 0.9 or less.

Provided is an interlayer film for laminated glass having increased tan δ and excellent sound insulating property in an interlayer film having a low glass transition temperature. An interlayer film for laminated glass according to the present invention includes a resin layer containing a resin component and a plasticizer, and combination of the resin component and the plasticizer in the resin layer is such that when a composition having a glass transition temperature of −10° C. is obtained by blending only the plasticizer in 100 parts by weight of the resin component, a blending amount of the plasticizer per 100 parts by weight of the resin component in the composition is 60 parts by weight or less, and the interlayer film satisfies the formula tan δ.sub.1≥1.3, or satisfies the formula: (tan δ.sub.0−tan δ.sub.1)/(Tg.sub.0+10)≤0.01.

An interlayer film for laminated glass includes a first layer containing a polyvinyl acetal resin and a plasticizer; and a second layer containing a polyvinyl acetal resin and a plasticizer, wherein the second layer is laminated on a first surface of the first layer, wherein a concentration of hydroxyl groups of the polyvinyl acetal resin in the first layer is different from a concentration of hydroxyl groups of the polyvinyl acetal resin in the second layer, and wherein at least one of the first layer, the second layer, or a portion of an interface between the first layer and the second layer contains a filler.

An interlayer film for laminated glass having a one-layer structure or a two or more-layer structure includes a first layer containing a polyvinyl acetal resin and a plasticizer, wherein the first layer further contains silica particles, and the ratio of a content of the silica particles in the first layer to a total content of the polyvinyl acetal resin and the plasticizer in the first layer is from 0.03 to 0.4.

A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 2 μm.sup.3/μm.sup.2 to 18 μm.sup.3/μm.sup.2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.